I've been curious about wool dryer balls myself. I've not used them yet, but I've been researching them. Wool balls can work in reducing static cling, but how well they work depends on how you dry your clothes. Static cling occurs mainly when clothes are over-dried and rub against each other a lot. Synthetics dry quickly and so that's one reason you'll find they are more staticy. Wool balls absorb and hold moisture, which will help keep moisture in the dryer, without making your clothes wet. Additionally, since they absorb moisture and fluff your laundry, they help your clothes dry faster. So, if you try wool dryer balls and find your clothes still have a lot of static, try drying your clothes for less amount of time.
One suggestion is to set a timer for 10-15 minutes when you start the dryer. When the timer goes off, pull out the synthetic materials, which should be dry or close to it. Additionally, you might try using a drying rack for synthetics. We have one and find it to be a great way to dry delicates and synthetics. It doesn't take up much room and can hold quite a few clothing items.
Wife to David and mommy to Ethan
Our Simply Natural Life